South Africa said Thursday it did not deliberately withhold information about elephant poaching at one of its national parks from a U.N. organization deciding whether to allow sales of ivory stockpiles. On Tuesday, the U.N. Convention on International Trade in Endangered Species (CITES) voted to allow South Africa, Botswana and Namibia to stage one-time sales of ivory from their stockpiles in 2004 provided it did not lead to a surge in poaching by criminals hoping to launder fresh tusks among the legitimate sales.